Wheat-separator



ANGEL & COFFEEN.

Grain Separator.

No. 217,057. Patented Aug. 3 1858.

N. PETERS. Phcln-Lilhcgnphun vmhin lun. n.c.

UNITED STATES PATENT OFFICE.

W. H. ANGEL AND M. GOFFEEN, OF \VATERTOVVN, NEW YORK.

WHEAT-SEPARAT OR.

Specification of Letters Patent No. 21,057, dated August 3, 1858.

To all whom it may concern:

Be it known that we, WV. H. ANGEL and M. COFFEEN, of atertown, in thecounty of J eiferson and State of New York, have invented certainImprovements in lVheat-Separators; and we do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawings and to the letters of reference thereon,like letters and marks indicating like parts in all the figures thereof.

Of the drawings Figure 1 is a side view of the separator; Fig. 2 an endview, and Fig. 3 a longitudinal view of the perforated plates.

A large portion of the wheat brought to the mills in this sect-ion ofthe country contains oats, shrunken grains, spurned grains and rat andmice droppings. All of these it is very diflicult to separate from theplump and perfect grains of wheat, and unless they are entirelyseparated the quality of the flour is deteriorated.

The object of our invention is to separate the perfect grains of wheatfrom all impurities, and this we effect by an arrangement of perforatedplates, and in this arrangement, mainly, consists our invention.

To enable others skilled in the art to make and use our invention wewill proceed to describe its construction and operation.

In general the structure of our separator is shown by Figs. 1 and 2 ofthe drawings; (A) indicating the frame; (B) the box containing theperforated plates; (C) the box or drawer underneath the plates, andwhich is intended to receive the shrunken grains and such other smallmatter as may pass through all the plates; (D) the fan-blower; the airpassage from the blower; (F) the chute to convey the wheat into the airpassage; (G) conical shafts to the ends of the upper one of which, on acrank or eccentric pin (00),

are attached rods (h) which extend to and are also attached to the boxcontaining the perforated plates, which rods by the rotation of theconical shafts give motion to the perforated plate box; (1) guide to therollerband (J); (K) sliding-bar for controlling the guide and band; (L)beveled wheel on the end of a shaft which derives its motion from a mainshaft, on which is the fanblower, and to which it is connected by bandsor other means for conveying motion; (M) beveled wheel on the end of thelower conical shaft; (N) spring bars, upon pins (0) of which each cornerof the plate box rests there being small plates, having slits in rod orbar inserted through the frame bar (Q), and (R) is a yoke aflixed to therear part of the plate-box.

(1) marks an adjusting nut on the springrod, which permits the plate-boxto be adjusted vertically, the same provision also ex- 2 isting in thebars (N) by nuts (u) and guide plates By the means here recited the boxof per forated plates may be raised or lowered at either end and thusthe inclination of the plates be varied; while the speed of theseparator may be changed by the bar (K) sliding the band along theconical shafts.

It will be readily seen that the means here recited will give suchmotions to the perforated plate box as are due to the use of the one orthe other set ;-thus when the plate-box is resting at each corner uponthe pins (a) of the spring bars (N) the motions of the box will belateral each end traveling in lines parallel to the other, but when theupper or rear end of the box is connected with the yoke and spring-rodthe plate-box as a whole has somewhat of a rotary motion, while the rearend, by virtue of the play of the spring-rod, has an upward and downwardmotion also. Either of the set of means may be used as may be deemedmost desirable, as the arrangement of both allows of the use of the oneor the other as may be for the time preferred.

The holes of the three upper perforated plates are of the same diameteror area and each plate has the same inclination. These holes should be alittle larger than the diameter or transverse section of a perfect grainof wheat. The holes of the fourth or lower plate are of less diameter orarea than those of the other plates, being less than the diameter of aperfect grain of wheat, and this fourth plate is placed at a greaterinclination than the other plates. The holes and the relation of theupper plates to the lower are fully shown in Fig. 3 of the drawings (A,A, A, A,). This arrangement of the plates is a marked feature of ourinvention as by it the separator is enabled to perform the same dutythat would be performed by three separators when all the plates haveholes of different diameters, as is common, or the same duty as would beperformed by one separator, the grain being passed through it threetimes,the perfect grains in one separator necessarily pass through threeplates the functions of each plate being the same.

When our separator has been put in motion, either of the set of meansset out being used, if the grain as received at the mill be fed upon theupper part of the upper plate, it has a regular and continuous mot-ionforward or downward, the oats, rat droppings and large pieces of thespurned grain passing down and into a trough at the lower end areconducted in one direction, while the full grains of wheat with all theshrunken grains and mice droppings pass through the three upper platesto the fourth or lower plate, where the perfect grains slide on downinto the air passage of the fan-blower and the shrunken grains anddroppings go on through the holes of the fourth plate into the boxbeneath. An entire and perfect separation of the full grains of wheatfrom the other matters named takes place, and this is fully evidenced bythe flour made from the wheat thus separated; every instance of the useof our separator demonstrating its efficiency and superiority.

Having thus fully set forth our invention and described itsconstruct-ion and operation, what we claim as of our invention anddesire to secure by Letters Patent is l. The arrangement of the threeperfoated plates, having holes of the same diameter or area and placedat the same inclination, with the fourth perforated plate, having holesof a less diameter or area than the other plates and at a greaterinclination, as herein set forth.

2. WVe claim the spring bar or rod (P) and yoke in connection with theplates (Z) and bars (N) at the other end of the plate box for giving tothe plate-box the compound motion as herein described.

This specification signed at \Vatertown, N. Y., this 24th day of June,1858.

WM. H. ANGEL. M. COF F EEN.

Vitnesses N. A. PERKINS, G. R. MORSELL.

